Max has to protect Admiral Hargrade from the evil Chameleon, whose ability to disguise himself is legendary. The Chief orders Max to select the Admiral to be his best man at the wedding so that Max will have a cover to keep an eye on the Admiral at all times. Since no one knows what the Chameleon looks like, paranoia runs rampant at the Smart domicile — even "Mr. Bob" (Jack Cassidy), the interior decorator for the apartment, is mistaken for the wily master of disguise. The title of the episode references Coleridge's "Rime of the Ancient Mariner".
